RingBuffer

RingBuffer.py

class RingBuffer:
    def __init__(self, size):
        self.data = [None for i in xrange(size)]

    def append(self, x):
        self.data.pop(0)
        self.data.append(x)

    def get(self):
        return self.data

rb = RingBuffer(2)
rb.append('one')
rb.append('two')
print rb.get()
rb.append('three')
print rb.get()